Goichiro Hanaoka, Tsuyoshi Nishioka, Yuliang Zheng, Hideki Imai. An Efficient Hierarchical Identity-Based Key-Sharing Method Resistant against Collusion-Attacks. In Kwok-Yan Lam, Eiji Okamoto, Chaoping Xing, editors, Advances in Cryptology - ASIACRYPT 99, International Conference on the Theory and Applications of Cryptology and Information Security, Singapore, November 14-18, 1999, Proceedings. Volume 1716 of Lecture Notes in Computer Science, pages 348-362, Springer, 1999.
Abstract is missing.